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See NASA quote.

Why SureBolt?

Measures tension not torque,

Patented whole echo method,

Graphs tension changes in real-time,

Instrument is built into the PC,

  13.3" Color TOUCHSCREEN
ToughBook Open & Closed

Friction varies too much, bolt to bolt,

Not fooled by friction variations,

Using lubrication still leaves large friction variations,

Avoid flange leaks,


Prove to safety you took a reliable tension reading,

Far greater reliability,

All other bolt gages are one-point bolt gages,

No more zero-crossing peak jumping,

ALL other bolt gages have problems with peak jumping,

Dramatic improvement due to a new patented DSP technique,

Proven by NASA,

Can record over a million bolt tensions with their waveforms,

Playback built in,

Excel compatible data files,

Flange bolts easily grouped together,

Critical bolts,

Verify your design,


Tension verification,


Much easier to use,

Graphical help,

On-line help,

Dynamic help,

13" Color Screen instead of 5" black & white screen,

Full keyboard instead of a few cryptic keys,

Record field notes with your tension data,

You can use long file names,

Large on-screen buttons,

Familiar WinXP/2000 operating system,

Full featured laptop - Panasonic Toughbook Model 72 computer,

1 year limited warrantee,

No need to transfer data to another machine,

No hidden information,

To sum it up, vastly easier and more reliable.

Press here for a detailed point by point comparison to all other bolt gages.

Table Of Contents


FAST-DAQ. Measure bolt tension more reliably. Torque wrench versus tension wrench.

bulletSureBolt In Action
bulletOther company's quote about tension verses torque.
bulletA Perfect Torque Wrench Has Large Tension Errors! Why? Friction Variations.
bulletOther companies' research on tension and torque.
bulletMarch 2001
bulletSureBolt FLASH Video
bulletWhy all mechanical engineers do not learn to use bolt gages.
bulletNASA uses SureBolt to verify it's Space Station design.
bulletNASA used the first SureBolt prototype to record the changes in tension in nine Space Station bolts
bulletTension, not torque. Animation of an ultrasonic echo inside of a bolt.
bulletSB Videos/QuickStart 5 min, 1024x768.exe
bulletSB Videos/QuickStart 5 min, 1024x768.avi
bulletSB Videos/QuickStart 5 min, 768x576.exe
bulletSB Videos/QuickStart 5 min, 768x576.avi
bulletSB Videos/10 min QuickStart, 1024x768.exe
bulletSB Videos/QuickStart 10 min, how other BG work, 1024x768, 2fs.avi
bulletSB Videos/QuickStart 10 min, how other BG work, 768x576, 2fs.exe
bulletSB Videos/QuickStart 10 min, how other BG work, 768x576, 2fs.avi
bulletTension, not torque. Animation of an ultrasonic echo inside of a bolt.
bulletTutorial On-Line
bulletSureBolt Examples
bulletTwo Choices
bulletStartup Screen
bulletBolt Length
bulletBolt Coefficient
bulletTwo Choices
bulletFile Name 1st Example
bulletGet A Good Signal
bulletReminder, Good ...?
bulletStart Tensioning Bolt
bulletRecord Tensions, See
bulletReal-Time Graphing
bulletStartup Screen Playback
bulletExcel Spreadsheet
bulletSureBolt Examples
bulletWelcome screen
bulletBolt Coefficient
bulletAttach Transducer & Get A Good Signal
bulletRecord Tensions, M2
bulletTwo Choices
bulletRecord Tensions, See Echoes
bulletHardware Setup Help
bulletBolt tension errors associated with a torque wrench.
bulletTechnical information
bulletBolt Science Case Study. Torque's Friction Variations Cause Bolt Failure
bulletDownload Tutorial
bulletBolt Science Tutorial. Bolted Joint Tutorial
bulletSureBolt Patent
bulletJoint Tutorial
bulletLinks to other companies
bulletBolt Tension Calculator
bulletA Torque Wrench is Not a Tension Wrench. A torque wrench & bolt gage help prevent bolt failures & flange leaks. Bolt torque specification from tension calculation?
bulletRecord and Graph tension, with Flange Bolts Example
bulletEnter Your Bolt
bulletReal-Time Graphing and Critical Joint Design
bulletMechanical Engineering Resource or Handbook on Bolt Failures, Torque Errors, Flange Leaks. New technology for a mecahnical engineer to ...
bulletNew Technology Advances Bolted Joint Design. Ultrasonic Technology, DSP Technology, NDT Technology combined.
bulletStructural Engineering - Structural engineer - Bolt Failures - Torque Errors - Why. New Technology ...
bulletBridge Design & Bolts - Bolt Failures - Torque Errors - Why. New NDT Technology ...
bulletCivil Engineering Design - Civil Engineer - Bolt Failures - Torque Errors - Why. New Technology ...
bulletStress analysis & structural analysis software want bolt tension, not torque. Structural design depends on bolt stress, not torque.
bulletA Flange Bolt's Tension Varies 50% or more. New technology to measure flange bolt tension. Flange Gaskets Require Bolt Tension, Not Bolt Torque.
bulletNDT, NDE engineers all agree: Bolted Joints Fail Because...
bulletASME, ASTM, ASCE, ASSE, ... all agree: Bolted Joints Fail Because...
bulletBolt and Nut Tension, Not Bolt & Nut Torque. Bolt pattern, torque specification, high strength bolt, bolt specs,..., which one?
bulletNew Invention Advances Bolted Joint Design. New Ultrasonic Invention, DSP Invention, NDT Invention combine to ....
bulletSureBolt Product Page. List of SureBolt features.
bulletPart numbers and prices
bulletRuggedized version
bulletServices available from SureBolt
bulletOn-Site Consulting Services
bulletBolt Calibration Services
bulletNews Page
bulletFAST-DAQ Feedback Page
bulletFAST-DAQ Table of Contents Page




Let us know how we can help you.

(800) 732-7832
Postal address
1022 Antelope Trail, Winter Springs, FL 32708, USA

Send your email to with questions or  comments about how we can help. Contact us here, or type in the email address shown above (Due to spam, we have replaced the text email address, with the image email address shown above).

Note: Privacy. We will NOT give your contact information to anyone.

 No more guessing as to which "one point" is the right point.


The FIRST whole echo method (patented DSP Technique).

SureBolt picture

Built into a 
Panasonic Toughbook

Weather proof keyboard.

Visitors Since 1-22-02 Hit Counter
Last Modified: September 27, 2011